X-ray system.



H. F. WAITE.

X-RAY SYSTEM.

APPLICATION FILED oc'r.1s.19|1.

anue/wtoz dya/riy f Waia Patented Aug. 27. 1918.

:QTWT-l I; r sin El en HARRY F. "WAITE, F NEVT YORK, N. Y.

X-RAY SYSTEM- Application filed October 18, 1917.

it 0m it may concern is it known that I, HARRY F. WAITE, a

n of the United States, and a resident Landing, county of Queens,

e of New York, have invented l '7 vcnient in X-Ray owing is a speciv'fmy invention is to provide l oi crass for dental and similar 1- a whichrotating parts are eliminated I or with all troubles incidental thereto.

' other objects are accomplished by ion, one embodiment of which is moreparticularly set forth.

' or description of my is to be had to the actern.

This system. 1 is provided With an alteror similar current from anysuitable as a generator 2 which sends elecover the main wires 3 and 4.The

. r, :3 runs directly to a hot cathode filament 5 in a tube 6 and thisfilament has a se ond Wire 7 that runs to a coil 8 of the mary 9 of atransformer 10. The Wire is connected to this primary 9, as indicated sothat a low voltage current may flow through the hot cathode 5. The Wire3 is also connected to the secondary ll of the transformer 10 so as tohave a suitable connection With the hot cathode 5.

The anode 1:2 of the tube 6 is connected by a Wire 13 with the oppositeend of the secondary or high tension Winding 11 of this step uptransformer 10. The primary 9 of this transformer 10 is also connectedtothe wire 4.

in View of the foregoing the operation of my im )IOVGCl. system Will bereadily under- Specification of Letters Patent.

?a tented Aug. 2?. 191% Serial No. 197,201.

stood. The filament 3 is brought to a proper state of incandescence byelectricity taken from a few coils of the primary 9 and then a hightension current passes through the tube 6 from the transformer 10 in onedirection only and in the proper direction, that is, from the anode 12to the cathode 5, as all inverse aves are suppressed by the tube 6 whichacts as a valve. This passing of the high tension current through thetube 6, in the conventional manner, generates X- rays which are used asdesired.

While I have shown and described one embodiment of my invention, it isobvious that it is not restricted thereto, but is broad enough to coverall structures that come Within the scope of the annexed claims.

WVhat I claim is:

1. In a system of the class described, a step-up transformer with a lowtension circuit and a high tension circuit, a hot cathode X-ray tube inthe high tension circuit, and conductors connecting the hot cathode ofthe high tension circuit With the low tension circuit.

2. In a system of the class described, a step-up transformer With a 10Wtension circuit and a high tension circuit, an X-ray tube in the hightension circuit With a hot cathode and means for heating this cathodewith currents in the low tension circuit.

3. In a system' of the class described, a. step-up transformer with alow tension circuit and a high tension circuit, an X-ray tube in thehigh tension circuit, provided wi h a hot cathode, and means forsupplying this hot cathode with electricity from a few coils of theprimary of this transformer.

In testimony whereof I have placed my hand this 16th day of October,1917 HARRY F. WAIT E.

